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ESP32-S3-MINI-1 with stereo TDK ICS 43434 I2S MEMS microphone, micro SD, LiPo charging circuit, clip for shirt/lanyard
ESP32
Audio

High quality audio recorder, dev board & case

Sold by Andrews & Arnold Ltd

$47.28

No tax for United States [change]
Stock available: 10
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Original Design
This product was designed by Andrews & Arnold Ltd. By buying this product you support original hardware creators.

What is it?

A high quality audio recorder. [Lego for scale, not included]

Like many people - I do videos, but audio on the camera is not ideal, so I used to use a shirt mic and expensive audio recorder.

This audio recorder is way better, it is designed to be a self contained, small, very high quality, stereo, shirt mic.

Records to SD card, and can be configured to upload using supplied open source software. Also works as USB connected storage for simple file transfers without removing the card. Pull requested welcome on GitHub.

Battery and USB lead not included. Battery readily available on Amazon.

  • ESP32-S3-MINI-1-N4-R2 (Dual core, 4MB Flash, 2MB SPI RAM)
  • WS2812 LEDs, one for L/R status, and a line of them for status/battery level
  • Micro SD card slot fully wired for 4 bit working
  • LiPo charge circuit, and almost zero power sleep/off mode
  • USB-C for charging, programming, and file transfer
  • Loop at top for lanyard or clip (both included)
  • Latest version comes with 3D resin printed case - ideal for hand held or lanyard

Why did you make it?

To produce high quality audio on my YouTube videos - I am very pleased with it.

What makes it special?

It is compact, built in battery charger, WiFi, and the TDK microphones are excellent quality. Seriously, they are amazing.

It "just works"!

Links to code and documentation

Documentation (openmic.revk.uk)

Code (openmic.revk.uk)

Design Files (github.com)

Shipping policy

All parcels shipped with tracked shipping. Duty and sales tax are usually charged by your courier (except UK and US).

The seller

Andrews & Arnold Ltd

Andrews & Arnold Ltd logo

BRACKNELL, Berks, UK
3 orders since Apr 3, 2025
Andrews & Arnold Ltd are a UK based communications company. We sell internet, telephone, SMS, and make some serious routers (FireBrick).
We use a lot of open source, and give back with a lot of open source code and hardware designs on Codeberg.
We have many open source PCB designs. These are not sold as consumer products, but assembled PCBs, development boards for hobbyist use.
Suggestions and git merge requests on Codeberg always welcome.